--- product_id: 317930690 title: "Quad Lock Case for Samsung Galaxy S21 Ultra Black" brand: "quad lock" price: "฿6870" currency: THB in_stock: true reviews_count: 13 category: "Quad Lock" url: https://www.desertcart.co.th/products/317930690-quad-lock-case-for-samsung-galaxy-s21-ultra-black store_origin: TH region: Thailand --- # Edge-to-Edge Full Coverage Secure Quad Lock Mount Compatibility Impact-Resistant TPU Protection Quad Lock Case for Samsung Galaxy S21 Ultra Black **Brand:** quad lock **Price:** ฿6870 **Availability:** ✅ In Stock ## Summary > 🔒 Lock in Style, Unlock Freedom ## Quick Answers - **What is this?** Quad Lock Case for Samsung Galaxy S21 Ultra Black by quad lock - **How much does it cost?** ฿6870 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/317930690-quad-lock-case-for-samsung-galaxy-s21-ultra-black) ## Best For - quad lock enthusiasts ## Why This Product - Trusted quad lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rugged Meets Refined:** Crafted from impact-resistant TPU with a sleek black matte finish, combining durability with minimalist style. - • **Uninterrupted Access:** Full access to all ports, buttons, and switches ensures your workflow stays smooth and uninterrupted. - • **Lock & Roll with Confidence:** Seamlessly attach your Galaxy S21 Ultra to any Quad Lock mount—ride, run, drive, or moto—without missing a beat. - • **Trusted by Pros, Loved by You:** Join thousands who rely on Quad Lock’s secure system—your phone’s best defense on every adventure. - • **360° Protection, Zero Compromise:** Complete edge-to-edge coverage shields your phone from drops and scratches while maintaining a slim profile. ## Overview The Quad Lock Case for Samsung Galaxy S21 Ultra offers a perfect blend of secure mounting compatibility and robust protection. Made from impact-resistant TPU with a sleek matte black finish, it provides full edge-to-edge coverage while allowing easy access to all phone functions. Ideal for active professionals who demand both style and functionality. ## Description Quad Lock Case for Samsung Galaxy S21 Ultra Black: desertcart.co.uk: Electronics & Photo Review: Great product - Good fit Review: In this case, its a winner! - Great for the purpose for which it was purchased. It is a snug fit on the phone and sturdy. It looks strong and makes me feel confident that if I drop the phone, it will remain in good shape. I have since purchased the front poncho to protect from the rain when riding. I can attach to the quad lock fittings perfectly. I am completely happy with this case. ## Features - Compatible with all Quad Lock Mounts - Ride, Run, Moto, Drive, Life - Slim, everyday protective case for Galaxy S21 Ultra - Impact resistant TPU material with sleek, black matte finish - Complete edge-to-edge protection for your Galaxy - Full access to all ports, buttons & switches ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0936PYLVX | | Age Range Description | Adult | | Best Sellers Rank | 2,221 in Mobile Phone Basic Cases | | Box Contents | Quad Lock Case | | Brand Name | Quad Lock | | Colour | Black | | Compatible Cellular Phone Models | Samsung Galaxy S21 Ultra | | Compatible Devices | Samsung Galaxy S21 Ultra | | Compatible Phone Models | Samsung Galaxy S21 Ultra | | Customer Package Type | FFP | | Customer Reviews | 4.8 4.8 out of 5 stars (8,858) | | Embellishment Feature | No ornament | | Enclosure Material | Polycarbonate Thermoplastic Polyurethane | | Form Factor | Bumper | | Global Trade Identification Number | 09348943015325 | | Is Autographed | No | | Manufacturer | Quad Lock | | Manufacturer Part Number | QLC-GS21U | | Model Name | Cases - Galaxy | | Model Number | QLC-GS21U | | Number of Items | 1 | | Pattern | Solid | | Product Features | Compatible with all Quad Lock Mounts | | Product Finish Type | Matte | | Screen Size | 6.8 Inches | | Set Name | Samsung Galaxy S21 Ultra | | Style Name | Galaxy S21 Ultra | | Theme | technology | | Unit Count | 1.0 count | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** Quad Lock - **Colour:** Black - **Compatible devices:** Samsung Galaxy S21 Ultra - **Compatible phone models:** Samsung Galaxy S21 Ultra - **Embellishment:** No ornament - **Material:** Polycarbonate Thermoplastic Polyurethane - **Pattern:** Solid - **Special feature:** Compatible with all Quad Lock Mounts - **Theme:** technology - **Water resistance level:** Not Water Resistant ## Images ![Quad Lock Case for Samsung Galaxy S21 Ultra Black - Image 1](https://m.media-amazon.com/images/I/41RTu54dIGS.jpg) ![Quad Lock Case for Samsung Galaxy S21 Ultra Black - Image 2](https://m.media-amazon.com/images/I/51qCFj1kPqL.jpg) ![Quad Lock Case for Samsung Galaxy S21 Ultra Black - Image 3](https://m.media-amazon.com/images/I/51nRGsknH4L.jpg) ![Quad Lock Case for Samsung Galaxy S21 Ultra Black - Image 4](https://m.media-amazon.com/images/I/51Wqf9D3sGL.jpg) ![Quad Lock Case for Samsung Galaxy S21 Ultra Black - Image 5](https://m.media-amazon.com/images/I/51NeVoB5TJL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: So this phone works with quad lock which I will be using as a biker but what’s it like to use the case in every day usages? Id protection ok? Tia** A: I too bought it to use on my motorbike, works great for that purpose. For every day use it is fine and offers good protection but I usually swap back to my Spigen case after as the Quadlock case is very rigid and doesn't give as good a feel on the volume & power buttons on my S10+ **Q: Does this have a screen protector? It does not mention one in the description.** A: There is no screen protector on this case. **Q: Will it fit a samsung s10+** A: Hi, all compatible phones are listed on their website. I had to upgrade my phone, to get a case that fitted. Ps my old phone was well overdue upgrading!! **Q: Does it have a raised lip on all side of screen?** A: Yes it does so it protects the screen in falls and drops obviously not fully protects the screen but helps a lot ,if you drop it ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product *by B***N on 29 March 2026* Good fit ### ⭐⭐⭐⭐⭐ In this case, its a winner! *by N***Q on 20 March 2026* Great for the purpose for which it was purchased. It is a snug fit on the phone and sturdy. It looks strong and makes me feel confident that if I drop the phone, it will remain in good shape. I have since purchased the front poncho to protect from the rain when riding. I can attach to the quad lock fittings perfectly. I am completely happy with this case. ### ⭐⭐⭐⭐⭐ Quality phone case *by J***R on 16 November 2025* Quality phone case, quad lock system is really secure and works well in cars. These are my phone case of choice and have used them for my last 3 phones without any problems. ## Frequently Bought Together - Quad Lock Original Case for Samsung Galaxy S21 Ultra Black - Quad Lock Motorcycle Handlebar Mount PRO for iPhone, Samsung Galaxy and Pixel Smartphone --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/317930690-quad-lock-case-for-samsung-galaxy-s21-ultra-black](https://www.desertcart.co.th/products/317930690-quad-lock-case-for-samsung-galaxy-s21-ultra-black) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-26*